Other Information: Each Tablet Contains: sodium 20 mg. Store at 68-77 degrees F (20-25 degrees C). Avoid high humidity and excessive heat above 104 degrees F (40 degrees C). Misc: All day strong. Naproxen sodium tablets, 220 mg (NSAID). Strength to last 12 hours. Capsule-shaped tablets. Do not use if carton is open or if foil seal imprinted with safety squease on bottle opening is missing or broken. Made in Germany.